Jeff Hartley has seen John Mayer 1 time.

Originally from Bridgeport, Connecticut, John Clayton Meyer (born October 16, 1977) is a 1977-10-16 year old singer-songwriter and guitarist that has led a successful career both as a solo artist, session musician, and member of several bands including John Mayer Trio and Dead & Company, which he co-founded with former Grateful Dead member Bob Weir in 2011. Throughout his career, Mayer has dated a large number of A-class celebrities including Taylor Swift, Katy Perry, Jennifer Anniston, Minka Kelly, Jessica Simpson, and Jennifer Love Hewitt. Some of his most popular songs include "Gravity," "Last Train Home," "New Light," "Wild Blue," "Dancing in a Burning Room," and "Your Body is a Wonderland."